St. Bartholomew's Church is one of the oldest church buildings in Ljubljana. The church was first mentioned in 1370, when in front of it a peace treaty between the Doge of Venice and Leopold III and Albert III of Habsburg was concluded by their representatives on 30 October 1370, in which the Austrians agreed to return the city of Trieste for the compensation of 75,000 florins.
In 1526, its valuables were donated to a fund for improving the city's defenses against Turkish attacks. In the end of 15th century and beginning of 16th, it was a venue of Protestant liturgy and was during Slovene anti-reformation in 1618, it was reclaimed as a Roman Catholic church. In 1825, it was damaged by fire and restored several times.
Some elements of the original Romanesque church have been preserved, among them the portal on the northern side. Between 1933-36, the church was partially redesigned according to plans by Jože Plečnik.
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.